Factor the square of the binomial.x2 + 40x + 400
A. (x + 40)(x - 40)
B. (x + 20)(x - 20)
C. (x - 20)2
D. (x + 20)2
Answer: D
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Find the mistake, then find the correct answer.Solve for x: x2 - 4x + 10 = 0 line 1x = 
line 2 x = 
line 3 x = 
What will be an ideal response?
Provide an appropriate response.(a) If A is the coefficient matrix of the system 
, determine A-1.(b) Use A-1 to solve the system.
What will be an ideal response?
Translate to an equation. Do not solve.31 is what percent of 67?
A. 31 = p × 67 B. 31 = p × 67% C. 31 × p = 67 D. 31% = p × 67
Set up the linear programming problem.Mrs. White wants to crochet hats and afghans for a church fundraising bazaar. She needs 5 hours to make a hat and 2 hours to make an afghan, and she has no more than 38 hours available. She has material for no more than 13 items, and she wants to make at least two afghans. Let x = the number of hats she makes and y = the number of afghans she makes. Write a system of inequalities that describes these constraints.
A. 2x + 5y ? 38 x + y ? 13 x ? 2 B. 5x + 2y ? 38 x + y ? 13 x ? 2 C. 5x + 2y ? 38 x + y ? 13 y ? 2 D. 5x + 2y ? 38 x + y ? 13 y ? 2